Answer: each snack costs $3.5
Step-by-step explanation:
The total amount of money spent by the customer at the movie theater is $20.50
The customer buys a $13.50 movie tickets and 2 snacks costs the same amount c. This means that the total cost of the 2 snacks is 2c
Therefore, the total cost of the movie ticket and the snacks is
13.50 + 2c
Therefore,
13.50 + 2c = 20.50
2c = 20.50 - 13.50 = 7
c = 7/2 = 3.5
Answer:
2.26
Explanation:
Given: log base 3 and 12
Using the base rule, we can write it as
= log 12 / log 3
Now we can find the value of log 12 and log 3 using a calculator.
= 1.07918124 /0.477121754
=2.26
The answer is 2.26
Follow the steps for 8
(1) 8 * 2 = 16
(2) 16 * 5 = 80
Note: you could just combine the first 2 steps and multiply by 10 to start with. Much easier: just add a 0 onto 8.
(3a) 12 * 8 = 96
(3b) 96 - 24 = 72
(3c) So you want to take 1/2 72 which is 36
(4) 36 + 80 = 116
Let's try this with x.
(2) x * 10 = 10x
(3) 1/2 (12*x - 24)
(3) 10x + 1/2 (12x - 24)
(3) 10x + 6x - 12
(4) 16x - 12
Problem B
Math wiz would add 12 to the number given to her and then divide by 16. That's pretty complicated to do quickly.
For example Let the original number be 1221
(2) Multiply by 10 12210
(3) Take 1/2 the difference between 12 times 1221 and 24 which is 1/2(14652 - 24) = 7314
And add this result to 12210
7314 + 12210 = 19524
Tell her the number. She has to add 12
19524 + 12 = 19536 And divide by 16
to get 1221.
Pretty complex even for a wizard.
